864803516869 has 4 divisors (see below), whose sum is σ = 883203591744. Its totient is φ = 846403441996.

The previous prime is 864803516867. The next prime is 864803516873. The reversal of 864803516869 is 968615308468.

864803516869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 864803516869 - 2¹ = 864803516867 is a prime.

It is a super-2 number, since 2×864803516869² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 864803516869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864803516867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9200037367 + ... + 9200037460.

It is an arithmetic number, because the mean of its divisors is an integer number (220800897936).

Almost surely, 2^864803516869 is an apocalyptic number.

It is an amenable number.

864803516869 is a deficient number, since it is larger than the sum of its proper divisors (18400074875).

864803516869 is a wasteful number, since it uses less digits than its factorization.

864803516869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18400074874.

The product of its (nonzero) digits is 59719680, while the sum is 64.

The spelling of 864803516869 in words is "eight hundred sixty-four billion, eight hundred three million, five hundred sixteen thousand, eight hundred sixty-nine".